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<title>class Bundler::Worker - bundler: Ruby Standard Library Documentation</title>


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    <li ><a href="#method-c-new">::new</a>
    <li ><a href="#method-i-abort_threads">#abort_threads</a>
    <li ><a href="#method-i-add_interrupt_handler">#add_interrupt_handler</a>
    <li ><a href="#method-i-apply_func">#apply_func</a>
    <li ><a href="#method-i-create_threads">#create_threads</a>
    <li ><a href="#method-i-deq">#deq</a>
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    <main role="main" aria-labelledby="class-Bundler::Worker">
    <h1 id="class-Bundler::Worker" class="class">
      class Bundler::Worker
    </h1>

    <section class="description">
    
    </section>

      <section id="5Buntitled-5D" class="documentation-section">


      <section class="constants-list">
      <header>
      <h3>Constants</h3>
      </header>
      <dl>
          <dt id="POISON">POISON
          <dd>
        </dl>
        </section>

        <section class="attribute-method-details" class="method-section">
        <header>
        <h3>Attributes</h3>
        </header>

          <div id="attribute-i-name" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">name</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              <p>@return [String] the name of the worker</p>
              </div>
            </div>
            </section>


                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(size, name, func)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Creates a worker pool of specified size</p>

<p>@param size [Integer] Size of pool @param name [String] name the name of the worker @param func [Proc] job to run in inside the worker pool</p>

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 22</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">size</span>, <span class="ruby-identifier">name</span>, <span class="ruby-identifier">func</span>)
  <span class="ruby-ivar">@name</span> = <span class="ruby-identifier">name</span>
  <span class="ruby-ivar">@request_queue</span> = <span class="ruby-constant">Thread</span><span class="ruby-operator">::</span><span class="ruby-constant">Queue</span>.<span class="ruby-identifier">new</span>
  <span class="ruby-ivar">@response_queue</span> = <span class="ruby-constant">Thread</span><span class="ruby-operator">::</span><span class="ruby-constant">Queue</span>.<span class="ruby-identifier">new</span>
  <span class="ruby-ivar">@func</span> = <span class="ruby-identifier">func</span>
  <span class="ruby-ivar">@size</span> = <span class="ruby-identifier">size</span>
  <span class="ruby-ivar">@threads</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@previous_interrupt_handler</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-deq" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">deq</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Retrieves results of job function being executed in worker pool</p>

                              <div class="method-source-code" id="deq-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 41</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">deq</span>
  <span class="ruby-identifier">result</span> = <span class="ruby-ivar">@response_queue</span>.<span class="ruby-identifier">deq</span>
  <span class="ruby-identifier">raise</span> <span class="ruby-identifier">result</span>.<span class="ruby-identifier">exception</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">result</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">WrappedException</span>)
  <span class="ruby-identifier">result</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-enq" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">enq</span><span
                                class="method-args">(obj)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Enqueue a request to be executed in the worker pool</p>

<p>@param obj [String] mostly it is name of spec that should be downloaded</p>

                              <div class="method-source-code" id="enq-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 35</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">enq</span>(<span class="ruby-identifier">obj</span>)
  <span class="ruby-identifier">create_threads</span> <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@threads</span>
  <span class="ruby-ivar">@request_queue</span>.<span class="ruby-identifier">enq</span> <span class="ruby-identifier">obj</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-stop" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">stop</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="stop-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 47</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">stop</span>
  <span class="ruby-identifier">stop_threads</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="private-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Private Instance Methods</h3>
                </header>

                  <div id="method-i-abort_threads" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">abort_threads</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="abort_threads-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 80</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">abort_threads</span>
  <span class="ruby-constant">Bundler</span>.<span class="ruby-identifier">ui</span>.<span class="ruby-identifier">debug</span>(<span class="ruby-node">&quot;\n#{caller.join(&quot;\n&quot;)}&quot;</span>)
  <span class="ruby-ivar">@threads</span>.<span class="ruby-identifier">each</span>(<span class="ruby-operator">&amp;</span><span class="ruby-value">:exit</span>)
  <span class="ruby-identifier">exit</span> <span class="ruby-value">1</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-add_interrupt_handler" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">add_interrupt_handler</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="add_interrupt_handler-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 107</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">add_interrupt_handler</span>
  <span class="ruby-ivar">@previous_interrupt_handler</span> = <span class="ruby-identifier">trap</span>(<span class="ruby-string">&quot;INT&quot;</span>) { <span class="ruby-identifier">abort_threads</span> }
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-apply_func" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">apply_func</span><span
                                class="method-args">(obj, i)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="apply_func-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 61</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">apply_func</span>(<span class="ruby-identifier">obj</span>, <span class="ruby-identifier">i</span>)
  <span class="ruby-ivar">@func</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">obj</span>, <span class="ruby-identifier">i</span>)
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">Exception</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">e</span> <span class="ruby-comment"># rubocop:disable Lint/RescueException</span>
  <span class="ruby-constant">WrappedException</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">e</span>)
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-create_threads" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">create_threads</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="create_threads-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 86</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">create_threads</span>
  <span class="ruby-identifier">creation_errors</span> = []

  <span class="ruby-ivar">@threads</span> = <span class="ruby-constant">Array</span>.<span class="ruby-identifier">new</span>(<span class="ruby-ivar">@size</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span>
    <span class="ruby-constant">Thread</span>.<span class="ruby-identifier">start</span> { <span class="ruby-identifier">process_queue</span>(<span class="ruby-identifier">i</span>) }.<span class="ruby-identifier">tap</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">thread</span><span class="ruby-operator">|</span>
      <span class="ruby-identifier">thread</span>.<span class="ruby-identifier">name</span> = <span class="ruby-node">&quot;#{name} Worker ##{i}&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">thread</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-value">:name=</span>)
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">rescue</span> <span class="ruby-constant">ThreadError</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">e</span>
    <span class="ruby-identifier">creation_errors</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">e</span>
    <span class="ruby-keyword">nil</span>
  <span class="ruby-keyword">end</span>.<span class="ruby-identifier">compact</span>

  <span class="ruby-identifier">add_interrupt_handler</span> <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@threads</span>.<span class="ruby-identifier">empty?</span>

  <span class="ruby-keyword">return</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">creation_errors</span>.<span class="ruby-identifier">empty?</span>

  <span class="ruby-identifier">message</span> = <span class="ruby-node">&quot;Failed to create threads for the #{name} worker: #{creation_errors.map(&amp;:to_s).uniq.join(&quot;, &quot;)}&quot;</span>
  <span class="ruby-identifier">raise</span> <span class="ruby-constant">ThreadCreationError</span>, <span class="ruby-identifier">message</span> <span class="ruby-keyword">if</span> <span class="ruby-ivar">@threads</span>.<span class="ruby-identifier">empty?</span>
  <span class="ruby-constant">Bundler</span>.<span class="ruby-identifier">ui</span>.<span class="ruby-identifier">info</span> <span class="ruby-identifier">message</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-process_queue" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">process_queue</span><span
                                class="method-args">(i)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="process_queue-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 53</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">process_queue</span>(<span class="ruby-identifier">i</span>)
  <span class="ruby-identifier">loop</span> <span class="ruby-keyword">do</span>
    <span class="ruby-identifier">obj</span> = <span class="ruby-ivar">@request_queue</span>.<span class="ruby-identifier">deq</span>
    <span class="ruby-keyword">break</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">obj</span>.<span class="ruby-identifier">equal?</span> <span class="ruby-constant">POISON</span>
    <span class="ruby-ivar">@response_queue</span>.<span class="ruby-identifier">enq</span> <span class="ruby-identifier">apply_func</span>(<span class="ruby-identifier">obj</span>, <span class="ruby-identifier">i</span>)
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-remove_interrupt_handler" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">remove_interrupt_handler</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="remove_interrupt_handler-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 111</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">remove_interrupt_handler</span>
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@previous_interrupt_handler</span>

  <span class="ruby-identifier">trap</span> <span class="ruby-string">&quot;INT&quot;</span>, <span class="ruby-ivar">@previous_interrupt_handler</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-stop_threads" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">stop_threads</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Stop the worker threads by sending a poison object down the request queue so as worker threads after retrieving it, shut themselves down</p>

                              <div class="method-source-code" id="stop_threads-source">
            <pre><span class="ruby-comment"># File bundler/worker.rb, line 69</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">stop_threads</span>
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@threads</span>

  <span class="ruby-ivar">@threads</span>.<span class="ruby-identifier">each</span> { <span class="ruby-ivar">@request_queue</span>.<span class="ruby-identifier">enq</span> <span class="ruby-constant">POISON</span> }
  <span class="ruby-ivar">@threads</span>.<span class="ruby-identifier">each</span>(<span class="ruby-operator">&amp;</span><span class="ruby-value">:join</span>)

  <span class="ruby-identifier">remove_interrupt_handler</span>

  <span class="ruby-ivar">@threads</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
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